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My kid's best friend

JackDallas

Senator
Supporting Member
There's really only two hoists there; the 3/8" wire rope model and the 7/16" wire rope model. The 7/16" wire rope model has two versions; the 5" drum rim model and the 6 1/2" drum rim model; which, those are two different hoists, they share a lot of the same parts but they have different sized frames and will require their own parts lists. So, really, there is 3 different hoists there.

Let's say the Willis Tower (Sears Tower) wanted a hoist and davit. Look at the reach column on the 3/8" chart for their roof height (1460 feet)... they would wrap six levels of wire rope on that hoist; it would take 37 minutes to climb from the sidewalk to their roof.
You've provided too much information. I just don't have time to engage it all.
 

Days

Commentator
You've provided too much information. I just don't have time to engage it all.
Thanks Jack, you've already been more engaged than I expected from anyone. All I'm doing here is sharing my excitement over acquiring a product line for a proposed corporation. Any entrepreneur would understand.

I mailed that model chart this morning, then came home and realized that I have actual models now, so I need to name them. Soooooooooo, in reverence to Henry Ford and all classic beginnings, I have given the 3 models their own names...

upload_2018-6-2_13-49-52.png
 

JackDallas

Senator
Supporting Member
Thanks Jack, you've already been more engaged than I expected from anyone. All I'm doing here is sharing my excitement over acquiring a product line for a proposed corporation. Any entrepreneur would understand.

I mailed that model chart this morning, then came home and realized that I have actual models now, so I need to name them. Soooooooooo, in reverence to Henry Ford and all classic beginnings, I have given the 3 models their own names...

View attachment 39259
Don't get me wrong, it's all very interesting but I just don't have the time to reset my brain. I'm in the process of going over the edits of my next book from my publisher which comes out in paperback in July. I have a mission trip at the end of June and i'm working on a new book, all at the same time. My brain is at 120% now. There is no more room left.
 

Days

Commentator
Don't get me wrong, it's all very interesting but I just don't have the time to reset my brain. I'm in the process of going over the edits of my next book from my publisher which comes out in paperback in July. I have a mission trip at the end of June and i'm working on a new book, all at the same time. My brain is at 120% now. There is no more room left.
I hear ya! What is the name of the new book that is coming out in July?
 
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Days

Commentator
finally got some time off to work on my hoist...

check out the completed product line:


upload_2018-6-4_15-37-20.png


here's the speed and run time chart on Model D (I definitely do not expect to see this model built in my lifetime)...

this chart picks up where the 3" drum rim model left off:


upload_2018-6-4_15-40-32.png
 

Days

Commentator
It's all geek to me.
you know, 2 of my 3 brothers have the degrees in electrical, the other one has a MBA... no man builds a corporation alone, but this immediate family has built a half dozen corps already. I appreciated the heads up that the solar panel would be pushing AC at the power controls, so we will need to convert that to a DC recharge for the batteries. I am hoping to drop those headaches on my brother... but I make sure the technology is available before I incorporate it into my design. I've done a lot of commercial electrical work myself, but I have no experience with DC... although those are my initials DC, and funny enough, the brother I'm hoping wants to jump onboard and do the electrical for me; his initials are AC. We was just born to do this hoist, that's how I see it. But there's a lot of good reasons to not want to do this idea; I understand that, it would be downright strange if both brothers and my friend were all to say, "I'm in"... especially seeing as they are all in their low to mid 60's, with families to look after. That's life.
 

Days

Commentator
So, I finally ended up with just one hoist; what will I do with all those copies I made of that cool looking chart for hoist models?

this is the final choice:
 

Days

Commentator
All summer I've been working on the frame and brake of the final model, until the tweaks I made this weekend has brought a final, final, final hoist design into view. I haven't even mailed the tweaks out yet, but I updated my description, which I have held back from publishing until I knew it was current with a final design. I ended up with the 3/4 mile reach hoist, which was always my favorite. Here's the speed and run time chart for it and the description that accompanies the investment opportunity...


upload_2018-8-5_12-54-42.png




The Hoist and Davit


This is the first scaffold hoist specifically designed for super tall buildings. Conventional scaffold hoists are not suited to the performance demands of the 1200 foot + environment, if our industry is going to gain access to the exterior of super tall buildings, we must enter a whole new paradigm of hoist performance. This hoist is a battery driven gearmotor hoist that employs two 60 Volt DC motor/ generators working in tandem behind air cooled planetary gearing. It is a much larger scaffold hoist than the world has ever seen, the hoist is 8 feet tall, 5 feet wide, and 4 feet deep, mostly constructed from titanium. The hoist weighs roughly 2600 pounds. The gear motor wraps a maximum 1207 meters of 7/16” wire rope onto a 15” diameter drum located underneath the stage, giving the hoist a max reach of 3960 feet (3/4 mile). The frame suspends a wire rope drum tube between two motor housing tubes, sending power through two gearings that meet in the center of the drum tube. The gearing provides a 3600:1 torque reduction for both motors, making the hoist extremely powerful. 1400 RPM motors engage inline gearing that provide 100% throughput to the drum. The 150:1 gear ratio turns the drum at 9 1/3 RPM … resulting in a base wrap that climbs 36 ½ feet per minute, and a run time of 5 minutes, 20 seconds per level. Drum capacity is 15 levels of wire rope.


There is no AC on this hoist. A total of 4 cubic feet of battery provides a large reservoir of power for a system that is constantly receiving and using a small flow of voltage. Two lithium polymer batteries are recharged by a 12” x 16” solar panel located on the roof of the hoist. A laser is fastened on the end of the davit boom and aimed directly down at the solar panel. Since the batteries are onboard, there is no way to lose power, but if the laser fails, there should be sufficient charge in the batteries to climb to the roof. The laser runs on the building’s power feed to the roof, the laser converts that power source to light, which the solar panel then converts back to electricity; hence, the hoist batteries are recharged in use, and the DC power controls maintain the battery charge level at 95%. The idea is to take advantage of lithium polymer batteries being very good at discharge and recharge. In essence, the laser does the job of an electric cord… it feeds power to the stage, only it does it wireless.


There are no load-free lines such as an electric cord or nylon/polyurethane rope, the wire rope load line is the sole line on each end of the stage; this is crucial when scaling thousands of feet. Guard rail is structural; the operator can tie off to the back rail, while the pick is secured to the front guard rail. The hoist is balancing a front side and a back side, by positioning a heavy ballast in the bottom middle. The front two-foot work area is completely unobstructed, while the back side of the hoist has the fairlead, spreader, drum guide, batteries, power controls, and solar panel. The load line enters the fairlead 7” behind the stage. The load line is captured by tension rollers in the upper fairlead, which then feed a swivel sheave in the lower fairlead, the fairlead swivel sheave turns freely as does the spreader trolley it feeds, both are controlled by the drum guide trolley they feed, and the drum guide trolley is geared to the drum. With over 6 vertical feet from the tension rollers in the upper fairlead to the capture of the wire rope on the drum, this hoist takes platform stability to a whole new level, the hoist is also balanced from left to right and front to back. Below the stage, located on the upper and lower levels of frame, there are two 6” diameter x 26” rollers. The spreader is a precision spreader, there is absolutely zero pull to any point on the drum by the wire rope being under load. There are no electrical controls to the wire rope guide… it is solely an interaction of mechanical gears… impossible to fail. When the drum reverses direction, so does the guide; if the drum wrap hits the rim and heads back the other direction, so does the guide… the drum turns everything, the gears only turn if the drum turns.


Down direction is power off, pushing the pendant down button only releases the brakes… the hoist then free falls, gravity runs the down direction. The DC motor/generator recharges the battery in down direction. The drum will stop turning the moment the hoist sets down, and the wire rope remains taut with the tension rollers in the upper fairlead at all times. The drum is braked on each end by 2 giant friction brakes: with over 311 square inches of braking area, they require 11 pounds, 9 oz per square inch to stop 3600 pounds. Springs, seated in the frame, make the brake always on, the springs are accompanied by solenoids that hold off the brake when moving. The brake takes the entire load directly, while the gearing and the generator constantly limit the drum rotation to 9 1/3 RPM, making the brake system extremely powerful.


I designed a davit roof truck that can suspend this hoist over the side and clear any size wall. The davit is really an electric crane. The 5 feet x 7 ½ feet davit truck supports a mast of 3 stages that fit inside each other, and a boom that swivels on top. The truck, mast, and boom weigh about 7 tons, and then there is boom counter weight of an additional 3 tons, so all total, 10 tons. The davit truck is also counterweight for the boom; when a drop site is chosen, the davit is jacked in the four corners, the hoist and boom counterweight are lifted (simultaneously), then the boom swivels on the mast and the stage is swung over the wall, then the boom ties back to the roof truck, there’s no need to tie down the truck to the building. The proper boom counter weight will be provided for stage weight and payload; the boom stays in balance, even at 500 pounds over the optimum working payload. A traction hoist and 2 pulleys, rigged to the boom counter weight, lift the mast into place, and then lift the boom counter weight, suspended from two pulleys on the back of the boom. Two men should be to set up the mast, collapse the mast, and handle moves between drops. A pavement needs to be provided for the davit truck.


It is temporary staging, custom built to work for each building. It is nearly zero maintenance, rugged equipment that will last as long as the building it is built for. It is high performance equipment, the stage is extremely stable, fast, and the wire rope guide wraps so accurate, the wire rope should last a decade between changes. It is a powerful hoist, with a heavy duty super structure, that can handle heavy use as well as heavy projects. And it is wireless technology, onboard power, that puts full control of movement in the hands of the men on the stage.
 

Days

Commentator
The drum needs 3 lays of wire rope before it can start to pick a load. I just caught a mistake in the description; I put the reach of the hoist for the drum capacity. Actually, the drum wraps a maximum 1212 meters of wire rope, which gives the hoist a max reach of 3960 feet (1207 meters).

The tallest roof in the world is 2100 feet high... the Jeddah Tower roof should top out around 2300 feet high this year, the next five years of construction is banging up a half dozen super tall buildings in the 2100 - 2500 foot range. So, this hoist is way out in front of the curve. But if we get it on market, someone will design a 3/4 mile high roof; architects are fearless.
 
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Days

Commentator
The drum needs 3 lays of wire rope before it can start to pick a load. I just caught a mistake in the description; I put the reach of the hoist for the drum capacity. Actually, the drum wraps a maximum 1212 meters of wire rope, which gives the hoist a max reach of 3960 feet (1207 meters).

The tallest roof in the world is 2100 feet high... the Jeddah Tower roof should top out around 2300 feet high this year, the next five years of construction is banging up a half dozen super tall buildings in the 2100 - 2500 foot range. So, this hoist is way out in front of the curve. But if we get it on market, someone will design a 3/4 mile high roof; architects are fearless.
Spoiler Alert!

The drum rims are 6 3/4" tall, but they are rounded to 6 9/16". There is a physical 7 1/2" of space between the drum tube and the deck overhead as well as the caster plate underneath. What that means is, there is room in this design to push the drum rims out to 7 3/8", which would allow for 2 more levels of wire rope. I would only build that if someone built a roof higher than 3/4 mile... probably not going to happen in my lifetime. But there is room in the design to go to 16 levels of wire rope (4300 feet reach) and if they needed it, the same design could cram 17 levels of wire rope on the drum. 17 levels would reach 4650 feet.

I didn't want to leave the impression that some architect could build a 4000 foot roof and own that perch as tallest roof indefinitely... this hoist can go higher, there's just no reason to put on 7" rims or 7 3/8" rims for the current market. That might happen someday... or not, who knows?
 

Days

Commentator
Well, the design phase is coming around the final bend and this looks pretty good. I did a final revision of the hoist and davit description, yesterday, it will be going out in today's mail. The hoist ends up being two models: the 7/16" wire rope model and the 1/2" wire rope model. Here's the description:


The Hoist and Davit


This is the first scaffold hoist specifically designed for super tall buildings. Conventional scaffold hoists are not suited to the performance demands of the 1200 foot + environment, if our industry is going to gain access to the exterior of super tall buildings, we must enter a whole new paradigm of hoist performance. This hoist is a battery driven gearmotor hoist that employs two 60 Volt DC motor/ generators working in tandem behind air cooled planetary gearing. It is a much larger scaffold hoist than the world has ever seen, the hoist is 8 feet tall, 5 feet wide, and 4 feet deep, constructed entirely from titanium. The hoist employs a 15” diameter drum and weighs roughly 2800 pounds. Below and in front of the stage, located on the upper and lower levels of frame, there are two 7” diameter x 40” rollers. The frame suspends a wire rope drum tube between two motor housing tubes, sending power through two gearings that meet in the center of the drum tube. The gearing provides a 3600:1 torque reduction for both motors, making the hoist extremely powerful. 1400 RPM motors engage inline gearing that provide 100% throughput to the drum. The 150:1 gear ratio turns the drum at 9 1/3 RPM … resulting in a base wrap that climbs 36 ½ feet per minute. The hoist has two models: one with a 1200-meter reach, using 7/16” wire rope and the other with a 1025-meter reach, using ½” wire rope.


There is no AC on this hoist. A total of 4 cubic feet of lithium polymer batteries provide a large reservoir of power for a system that is constantly receiving and using a small flow of voltage. Two battery packs are recharged by a 12” x 16” solar panel located on the roof of the hoist. A laser is fastened on the end of the davit boom and aimed directly down at the solar panel. Since the batteries are onboard, there is no way to lose power, but if the laser fails, there should be sufficient charge in the batteries to climb to the roof. The laser runs on the building’s power feed to the roof, the laser converts that power source to light, which the solar panel then converts back to electricity; hence, the hoist batteries are recharged in use, and the DC power controls maintain the battery charge level at 95%. The idea is to take advantage of lithium polymer batteries being very good at discharge and recharge. In essence, the laser does the job of an electric cord… it feeds power to the stage, only it does it wireless.


There are no load-free lines such as an electric cord or nylon/polyurethane rope, the wire rope load line is the sole line on each end of the stage. Guard rail is structural; the operator can tie off to the back rail, while the pick is secured to the front guard rail. The hoist is balancing a front side and a back side, by positioning a heavy ballast in the bottom middle. The front two-foot work area is completely unobstructed, while the back side of the hoist has the fairlead, spreader, drum guide, batteries, power controls, and solar panel. The load line enters the fairlead 7” behind the stage. The load line is captured by tension rollers in the upper fairlead, which then feed a swivel sheave in the lower fairlead, the fairlead swivel sheave turns freely as does the spreader trolley it feeds, both are controlled by the drum guide trolley they feed, and the drum guide trolley is geared to the drum. The spreader is a precision spreader, there is absolutely zero pull to any point on the drum by the wire rope being under load. There are no electrical controls to the wire rope guide… it is solely an interaction of mechanical gears… impossible to fail. When the drum reverses direction, so does the guide; if the drum wrap hits the rim and heads back the other direction, so does the guide… the drum turns everything, the gears only turn if the drum turns. With over 6 vertical feet from the tension rollers in the upper fairlead to the capture of the wire rope on the drum, this hoist takes platform stability to a whole new level, the hoist is also balanced from left to right and front to back.


Down direction is power off, pushing the pendant down button only releases the brakes… the hoist then free falls, gravity runs the down direction. The DC motor/generator recharges the battery in down direction, while the gearing and the generator constantly limit the drum rotation to 9 1/3 RPM. The drum will stop turning the moment the hoist sets down, and the wire rope remains taut with the tension rollers in the upper fairlead at all times. The drum is braked on each end by 2 giant friction brakes: with a total of over 300 square inches of braking area, they require less than 12 pounds per square inch to stop this hoist. The brake takes the entire load directly. Springs, seated in the frame, make the brake always on, the springs are accompanied by solenoids that hold off the brake when moving.


I designed a davit roof truck that can suspend this hoist over the side and clear any size wall. The davit is really an electric crane. The 5 feet x 7 ½ feet davit truck supports a mast of 3 stages that fit inside each other, and a boom that swivels on top. The truck, mast, and boom weigh about 7 tons, and then there is boom counter weight of an additional 3 tons, so all total, 10 tons. The davit truck is also counterweight for the boom; when a drop site is chosen, the davit is jacked in the four corners, the hoist and boom counterweight are lifted (simultaneously), then the boom swivels on the mast and the stage is swung over the wall, then the boom ties back to the roof truck, there’s no need to tie down the truck to the building. The proper boom counter weight will be provided for stage weight and payload; the boom stays in balance, even at 500 pounds over the optimum working payload. A traction hoist and 2 pulleys, rigged to the boom counter weight, lift the mast into place, and then lift the boom counter weight, suspended from two pulleys on the back of the boom. Two men should be able to set up the mast, collapse the mast, and handle moves between drops. A pavement needs to be provided for the davit truck.


It is temporary staging, custom built to work for each building. It is nearly zero maintenance, rugged equipment that will last as long as the building it is built for. It is high performance equipment, the stage is extremely stable, fast, and the wire rope guide wraps so accurate, the wire rope should last many years between changes. It is a powerful hoist, with a heavy duty super structure, that can handle heavy use as well as heavy projects. And it is wireless technology, onboard power, that puts full control of movement in the hands of the men on the stage. This is a very safe hoist that will never get stuck in the air for any reason.
 
You know him as Prince Von Prussia, commander of the King's German legion, based upon an actual brigade that fought in Germany for the British crown in Napoleonic times. (I am violent_indigo, I am a sergeant for the 051st, an actual air wing under the German Reich in WWII; they were known for purposely sparing the enemy pilot in their kills). Okay, maybe you are not up on our gaming personalities, but many kids out there know us that way. Of course , we know Martin as the kid who lived across the court yard in our complex and hung out with Daniel, here in our living room. Years gone by.

They are both in college now. Daniel has his eyes set on the financial forecasting aspect of industrial engineering, so he's looking to pick up a math minor; industrial engineering major is so math intensive, he would only need three additional math classes to pick up the minor. Martin is already employed by the UN (yeah, that UN; the United Nations) bringing in folks legally from the war torn Congo. There are some 16,000 residents in the Chicagoland area from the Congo, that Martin tends to along with new comers. Martin is not yet 20 years old, so how on earth does he end up in a position at the UN, that he doesn't even have the schooling for?

Turns out one of the legitimate heirs to a throne absorbed into Prussia (became Germany) prior to WW I... hence, the Prince Von Prussia nickname... turns out that was on his mother's side. Meanwhile his dad is the ruling monarch of Congo; a nation war torn and beset with governmental absurdities from the Dutch and the British, always full of revolutionaries, always in a Civil War, and it is pretty intense at the moment. And, of course, the current government in power, as well as all the governments set up by European powers, treat the royal palace and bloodline to the throne with utter contempt. It seems the palace gets attacked from all sides. Warlords fire rockets at it, the government hurls measures and laws at it, but the people who live there still recognize it as the legitimate crown that it is. The first born male - that's Martin - becomes the next king. Since his dad is still alive, Martin is what is known as the crown prince... he has to attend a couple royal affairs every week, always dressed appropriately. Martin has a flair for outfits, he is big time into military re-enactments from all over history.

Daniel and Martin know an awful lot of battle history and strategy. For Martin, it's a functional necessity; all his cousins next in line to the throne, and living there in Congo, hate the government (everyone hates the government) and want to allign power with the rebels, join the forces on the ground to overthrow the capital. Martin lives over here, and he has a cooler head, he sees the perils of joining an armed revolt, so he has refused to do it. So, he gets Christmas cards, from his cousins, stating, "I can't wait for you to die, so I can take the crown over". kind of surreal. We all have our family struggles.

Daniel and Martin wrote a book together when they were 15. It was set in Napoleonic times. Their characters were officers in the military, of course. Wild imaginations rooted in real historic times. Today, they want to rewrite the book, fix all the historic flaws. I doubt they ever find the time to do so.

It was Martin who taught us all how to fly at War Thunder, and it was Martin who showed me that all my extra crew points are shared with the tank crews... hence, I set up those crews and now play the tanks as well as fly the planes. It was Martin that taught Daniel the war gaming set in Napoleonic and Roman times. One of Daniel's classes, this semester, is classic lit; history of the Roman Empire. Every now and then I get lectures on Roman politics and historic campaigns, which include the command structure for the legions in the field; it is fascinating stuff, and it sheds light on what's behind modern government. I thank Martin for placing it all in my life, I thank God for placing Martin into our family, we love him to death, and we hope that God keeps him alive, so we can go on loving him.
NINETEENTH CENTURY: Manifest Destiny
TWENTIETH CENTURY: Many Fuzzy Dustbunnies


All the more reason that ending colonialism was a ruling-class Whiteys Hating Whitey mistake.
 

Days

Commentator
NINETEENTH CENTURY: Manifest Destiny
TWENTIETH CENTURY: Many Fuzzy Dustbunnies


All the more reason that ending colonialism was a ruling-class Whiteys Hating Whitey mistake.
colonialism is alive and well on planet earth. Global elites have taken it from the incubator (viva la revolucion!!) to the economic model of central banking. What is communism if it isn't merely a large scale company town?

Over in Africa, colonialism is still being fought against. It still rules.
 
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